about to start my LQ4 build, few questions
09-25-2008, 08:23 PM
#21
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ok, the seller just got back to me..the engine is a U code which is a 2006 motor. Heads are 317 castings..fresh out of the machine shop. worth $800?
09-25-2008, 09:43 PM
#23
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In my case, locally I can get an 05 LQ4 (intake to pan) with 60K miles for $700....Which is the lowest price I have seen, and the highest being upwards upto $2000 for an LQ4....
And from what I have seen, it depends on what the engine was out of...We as enthusiasts know that an LQ4 or LQ9 is the same no matter what truck or van they came out of....
But others, like those that run/operate junkyards, dont see it that way...they think if its out of an Escalade or HD Pickup its worth more than if it came out of a Savannah or Express Van....
09-26-2008, 11:06 AM
#24
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LS 6 intake If you look on LS1truck.com should be right on the home page as soon as the site opens up there are complete instructions on what to modify when going from the truck intake to the ls intakes. You will be moving a pulley and grinding a groove in to the alt bracket and a few more steps. But it does show picture for picture instructions. I use it to get the best of both worlds for info. I am putting a 6.0 lq4 into my 68 impala.
i wasnt trying to be a smartass btw, i searched in the gen iv forums and barely found and results at all..8 pages, as compared to the gen iii section where there was 65 pages of info lol...
anyways, i was planning on using an ls6 intake mani, they don't bolt right up to the lq4? what needs to be modified? if it is too much of a bitch, i suppose i could just go with a fast 90/90 setup..probably squeeze a little more power out of it. here is the info the seller gave me on the motor:
"complete low mile LQ4 6.0liter ls motor, alum heads just got back from the machine shop.
complete assy short block
fresh redone heads
complete wiring harness (new style green and blue block)
coil packs
truck intake complete with T body and injectors
some assy brackets "
thanks for all the help
anyways, i was planning on using an ls6 intake mani, they don't bolt right up to the lq4? what needs to be modified? if it is too much of a bitch, i suppose i could just go with a fast 90/90 setup..probably squeeze a little more power out of it. here is the info the seller gave me on the motor:
"complete low mile LQ4 6.0liter ls motor, alum heads just got back from the machine shop.
complete assy short block
fresh redone heads
complete wiring harness (new style green and blue block)
coil packs
truck intake complete with T body and injectors
some assy brackets "
thanks for all the help
09-26-2008, 11:14 AM
#25
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LS 6 intake swap from LS1TRUCK.com --------------------------------------------------------------------------------
LS6 Intake Swap
after doing some research and seeing numerous n/a 5.3's and 6L hp flatlineing around 5800 and slowly falling after 6k, i decided to take the plunge and do the ls6 intake swap. the ls6 intake seems to be a proven performed intake that pulls all the way to 6500 in modified engines (ei full boltons, cam, etc...)
stuff you will need to get the job done:
a nice set of various ratchets, sockets, wrenches, etc...
4" electric grinder. (grinding discs/ cutting discs)
fuel line disconnect tool
big 3 jaw puller
1.5 ft of 5/16" & 3/8" fuel line
1 5/16" & 1 3/8" barbed fuel line fitting
6 hose clamps for the hose sizes above
1/8" / barbed fitting
small diameter vacuume line
gallon anti freeze
parts for the job:
ls6 intake
ls1/ls6 intake bolts (can't use the truck ones, they are too short)
97/98 vette fuel rail (for 99 to 03 trucks) or 98 to 02 f body fuel rail (04 & up)
ls1/ls6 style injectors (i chose 28.8#'s b/c i needed bigger ones already)
ls1/ls6 injector pigtails summit part no. MSD-2400
ls1/ls6 water pump
ls1/ls6 map sensor
custom idler pulley relocation bracket
about to get started...
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 269KB.
removed the truck intake. alternator and p/s bracket removed also.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 272KB.
the fuel rail feed and return line will not clear the coil packs.
action: bend the lines upward to where there is enough clearance
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 203KB.
notice how the fuel rail lines clear the coils
the coolant hard line nipple, needs to be bent out to clear the intake also
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 260KB.
alternator and p/s bracket has to be cut in order to clear the throttle body since the ls6 intake sits alot lower than the truck one
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 223KB.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 285KB.
the bottom of the tb needs to be grinded some in order to clear the top of the water pump.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 221KB.
new injector pigtails wired up. fuel pressure regulator line goes to small nip in back of the intake.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 265KB.
pcv line goes to the small nip in the back of the intake also. barbed fuel line fittings are used to connect the fuel lines. evap sensor tucked behind the alternator (use a vacuum line to connect it to the front drivers side nip on the intake)
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 257KB.
since this intake was originally equipped with a cable style tb, i had to drill and tap for 1/8"npt / barbed fitting to hook up the passenger side valve cover vacuum line. also notice the black vacuum cap i plugged onto the intake.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 251KB.
final product
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 272KB.
if you see anything out of place or think more stuff needs to be added, just put in your input.
engine idle
Enjoy
__________________
N/A --- Idle --- N20
LS6 Intake Swap
after doing some research and seeing numerous n/a 5.3's and 6L hp flatlineing around 5800 and slowly falling after 6k, i decided to take the plunge and do the ls6 intake swap. the ls6 intake seems to be a proven performed intake that pulls all the way to 6500 in modified engines (ei full boltons, cam, etc...)
stuff you will need to get the job done:
a nice set of various ratchets, sockets, wrenches, etc...
4" electric grinder. (grinding discs/ cutting discs)
fuel line disconnect tool
big 3 jaw puller
1.5 ft of 5/16" & 3/8" fuel line
1 5/16" & 1 3/8" barbed fuel line fitting
6 hose clamps for the hose sizes above
1/8" / barbed fitting
small diameter vacuume line
gallon anti freeze
parts for the job:
ls6 intake
ls1/ls6 intake bolts (can't use the truck ones, they are too short)
97/98 vette fuel rail (for 99 to 03 trucks) or 98 to 02 f body fuel rail (04 & up)
ls1/ls6 style injectors (i chose 28.8#'s b/c i needed bigger ones already)
ls1/ls6 injector pigtails summit part no. MSD-2400
ls1/ls6 water pump
ls1/ls6 map sensor
custom idler pulley relocation bracket
about to get started...
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 269KB.
removed the truck intake. alternator and p/s bracket removed also.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 272KB.
the fuel rail feed and return line will not clear the coil packs.
action: bend the lines upward to where there is enough clearance
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 203KB.
notice how the fuel rail lines clear the coils
the coolant hard line nipple, needs to be bent out to clear the intake also
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 260KB.
alternator and p/s bracket has to be cut in order to clear the throttle body since the ls6 intake sits alot lower than the truck one
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 223KB.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 285KB.
the bottom of the tb needs to be grinded some in order to clear the top of the water pump.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 221KB.
new injector pigtails wired up. fuel pressure regulator line goes to small nip in back of the intake.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 265KB.
pcv line goes to the small nip in the back of the intake also. barbed fuel line fittings are used to connect the fuel lines. evap sensor tucked behind the alternator (use a vacuum line to connect it to the front drivers side nip on the intake)
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 257KB.
since this intake was originally equipped with a cable style tb, i had to drill and tap for 1/8"npt / barbed fitting to hook up the passenger side valve cover vacuum line. also notice the black vacuum cap i plugged onto the intake.
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 251KB.
final product
This image has been resized. Click this bar to view the full image. The original image is sized 800x600 and weights 272KB.
if you see anything out of place or think more stuff needs to be added, just put in your input.
engine idle
Enjoy
__________________
N/A --- Idle --- N20
09-26-2008, 11:35 PM
#29
Launching!
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Have we been there before? https://ls1tech.com/forums/showpost....64&postcount=8
09-27-2008, 11:28 AM
#31
I have an LQ4 out of a 2005 Silverado. Great engine.
853 heads ported by Lingenfelter
Kooks 1 7/8s LT custom exhaust
Some other mods that dont matter in this.... Moser 12 bolt, T56 built etc.
Before my FAST 92 and PTM 92 install it dino'ed 373 HP and 409 RWTQ. I am hoping guessing I am at 400 RWHP and at least 420 TQ. I have the stock truck motor cam.
With a 235ish cam on a 114 this motor could easily but out 450 to the wheels. Right now I have a torque monster that is fun as hell on the street.
853 heads ported by Lingenfelter
Kooks 1 7/8s LT custom exhaust
Some other mods that dont matter in this.... Moser 12 bolt, T56 built etc.
Before my FAST 92 and PTM 92 install it dino'ed 373 HP and 409 RWTQ. I am hoping guessing I am at 400 RWHP and at least 420 TQ. I have the stock truck motor cam.
With a 235ish cam on a 114 this motor could easily but out 450 to the wheels. Right now I have a torque monster that is fun as hell on the street.
Last edited by Hi-Po; 09-27-2008 at 11:36 AM.
09-27-2008, 03:57 PM
#32
Launching!
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I have an LQ4 out of a 2005 Silverado. Great engine.
853 heads ported by Lingenfelter
Kooks 1 7/8s LT custom exhaust
Some other mods that dont matter in this.... Moser 12 bolt, T56 built etc.
Before my FAST 92 and PTM 92 install it dino'ed 373 HP and 409 RWTQ. I am hoping guessing I am at 400 RWHP and at least 420 TQ. I have the stock truck motor cam.
With a 235ish cam on a 114 this motor could easily but out 450 to the wheels. Right now I have a torque monster that is fun as hell on the street.
853 heads ported by Lingenfelter
Kooks 1 7/8s LT custom exhaust
Some other mods that dont matter in this.... Moser 12 bolt, T56 built etc.
Before my FAST 92 and PTM 92 install it dino'ed 373 HP and 409 RWTQ. I am hoping guessing I am at 400 RWHP and at least 420 TQ. I have the stock truck motor cam.
With a 235ish cam on a 114 this motor could easily but out 450 to the wheels. Right now I have a torque monster that is fun as hell on the street.
Looks like a very stout combo! What is the peak RPM that you've buzzed this thing to? Shift points?
09-28-2008, 03:18 PM
#36
Staging Lane
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LOL thats funny that you have to use a GM LSx motor to make your pony car play with the big boys! J/K that should be a sweet little ride when your done! 
I like to see people go out on a limb! you will learn a thing or two on your adventures!
I like to see people go out on a limb! you will learn a thing or two on your adventures!
09-28-2008, 03:32 PM
#37
When I put my LQ4 together I started out by put in some ARP rodbolts. Then the fbody pickup tube and oilpan. Put the heads on. Changed out the crank pulley from the larger LQ4 to one from a fbody. Used all fbody accesories. Only used two bolts for the alt and haven't had anyproblems. Added LS6 intake. Put a pilot bearing in the back of the crank and then bolted up my T56. My car is only making 400/389 but my heads are completely untouched. If you want to hear it run here's the link. http://www.youtube.com/watch?v=deu3AxMWvAc
BTW Thanks for the comment dre. Sorry I don't have any 1/4 times for you.
BTW Thanks for the comment dre. Sorry I don't have any 1/4 times for you.
